Auth0 vs Firebase Auth

Firebase Auth is used by more websites in our catalog: 284 use Auth0 and 371 use Firebase Auth.

Auth0 sites have the higher median Ahrefs Domain Rating (Auth0: 62, Firebase Auth: 34).

Between 2026-06 and 2026-07, Auth0 went from 0.04% to 0.03% of all tracked sites, while Firebase Auth went from 0.05% to 0.04%. Firebase Auth is gaining ground faster in our index.

0 websites in our catalog use both Auth0 and Firebase Auth.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.